layouts: Add interslavic latin
There's no iso639-3 name for interslavic, but isv is not taken, so let's give it a go.
This is based on a rough guess about what a QWERTY variant might look.
Just for fun.
There's no iso639-3 name for interslavic, but isv is not taken, so let's give it a go.
This is based on a rough guess about what a QWERTY variant might look.
Just for fun.